Sally Lightfoot Crabs

Sally Lightfoot Crabs

Sally Lightfoot Crabs

Why They're Cool: Viewed up close, these ubiquitous crabs are absolute stunners, their shells decked out in vivid shades of red, orange and blue that look like they've been applied with an artist's brush. They're fun to watch too as they nimbly pick their way along slippery coastal rocks. In fact, their swift, sure movements are thought to have earned them their name.